/*
    Pureport, a report generator for Java
    Copyright (C) 2011  Maurice Perry <maurice@perry.ch>

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
package org.librebiz.pureport.context;

import java.io.Serializable;
import java.util.Map;

public class Forward implements Serializable {
    private TextBuilder builder;
    private String expr;
    private int index;

    public Forward(TextBuilder builder, int index, String expr) {
        this.builder = builder;
        this.index = index;
        this.expr = expr;
    }

    public void resolve(ReportContext context) {
        Object obj = context.evaluate(expr);
        Map attrs = builder.getAttributes(index);
        builder.delete(index, index + 1);
        if (obj != null) {
            builder.insert(index, obj.toString(), attrs);
        }
    }
}
